513142423231 has 4 divisors (see below), whose sum is σ = 514063684872. Its totient is φ = 512221161592.

The previous prime is 513142423147. The next prime is 513142423237. The reversal of 513142423231 is 132324241315.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 513142423231 - 2⁷ = 513142423103 is a prime.

It is a super-2 number, since 2×513142423231² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 513142423193 and 513142423202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513142423237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 460629985 + ... + 460631098.

It is an arithmetic number, because the mean of its divisors is an integer number (128515921218).

Almost surely, 2^513142423231 is an apocalyptic number.

513142423231 is a deficient number, since it is larger than the sum of its proper divisors (921261641).

513142423231 is an equidigital number, since it uses as much as digits as its factorization.

513142423231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 921261640.

The product of its digits is 17280, while the sum is 31.

Adding to 513142423231 its reverse (132324241315), we get a palindrome (645466664546).

The spelling of 513142423231 in words is "five hundred thirteen billion, one hundred forty-two million, four hundred twenty-three thousand, two hundred thirty-one".